Design of absorptive microwave filters using allpass networks in a parallel-cascade configuration

Author

Guyette, Andrew C. ; Hunter, Ian C. ; Pollard, Roger D.

Author_Institution

Electron. Sci. & Technol. Div., Naval Res. Lab., Washington, DC, USA

fYear

2009

fDate

7-12 June 2009

Firstpage

733

Lastpage

736

Abstract

A new approach to designing absorptive microwave filters using allpass networks in a parallel-cascade configuration is presented. A signal is divided into two paths, each comprised of a number of cascaded allpass networks. The two signals are then recombined, and frequency selectivity results from phase cancellation. It is shown that this approach is especially useful for dissipative loss compensation. A general method for designing the microwave allpass networks is given. Bandpass and bandstop microstrip prototypes were designed, built, and tested.

Keywords

all-pass filters; band-pass filters; band-stop filters; cascade networks; microstrip filters; microwave filters; absorptive microwave filter; allpass network; bandpass prototype; bandstop microstrip prototype; dissipative loss compensation; frequency selectivity; parallel-cascade configuration; phase cancellation; Admittance; Band pass filters; Frequency; Matched filters; Microwave filters; Microwave technology; Power dividers; Prototypes; Reflection; Transfer functions; Microwave filters; microstrip filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International

Conference_Location

Boston, MA

ISSN

0149-645X

Print_ISBN

978-1-4244-2803-8

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2009.5165801

Filename

5165801